Laminated glass assembly with tapered inner layex



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11. 1968, 840 0.0.1221; Idea tiflcation is by serial number of the application and the heading indicates the number of pages 0! speclileationg i nelnding claims, and of sheets of drawing contained in the application as originally died. The file of this application is available to the public !or inspection; reproduction may be purchased for 80 cents per sheet. r f r;

Applications published under the Defensive Publication Program have not been examined as to the merits of invention. The Patent Oiiice nukes no assertion as to the novelty of thediselosed subject matter.

PUBLISHED APRILL 22, 1969 861 O.G. 1019' Apr. 22, 1969 I Class 350-41 2 Sheets Drawing. 8 Pages Specification In order to correct double vision characteristics of curved Windshields constructed of, two sheets of glass, each sheet having a uniform thickness, atapered or wedged vinyl inner layer is positioned therebetween during a laminating operation, The vinyl inner layer is thicker at the top of the windshield than at the bottom. In a preferred windshield construction, the inner layer had a thickness of .035 inch at the top and .015 inch at the bottom of the windshield which was 26 inches wide. The amount of wedge to be placed in the layer of vinyl depends both on the angle of installation of the windshield and the radius of curvature of the windshield. These factors are correlated graphically for Windshields having difierent radius of curvature. The graphical illustration shows that for a 60inch curvature a wedge angle of three to five minutes is suflicient to eliminate the double vision characteristics I whereas a wedge angle of one to three minutes is suificient to eliminate double vision characteristics for a ISO-inch radius of curvature windshield,

April 22, 1969 LAIIINATBD GLASS ASSEMBLY WITH 'I'APERED INNER LAYER Original Filed s t. 7, 19s:

H. V. CHRISTENSEN DEF- PUB 1 INVENTOR. HOWARD v. CHRISTENSEN 7' TOR/VEV WEDGE ANGLE, MINUTES (a) A ril 22, 1969 H. v. CHRISTENSEN DEF. PUB.

LAMINATED GLASS ASSEMBLY WITH TAPBRED INNER LAYH SN 739939 Original Filed Sept. 7, 1965 Shut & or 2,

40 5O 6O 7O 1 '75 ANGLE OF INCIDENCE,DEGREES INVENTOR. HOWARD V. CHRISTENSEN A TTORNEV 

